Pro Audio Design Forum

offhand:

Altec 428B
Collins 356A
Langevin AM-5116-B
RCA BA-21A
Several of the original UA preamps, I think also one or more of their SS types. LA-3A?
There are several Lundahl designed for SS with tertiary feedback I think.
There are others.

Nice. I could have used that back when I was rebuilding a lot of Altec 9470A/9475A push-pull preamps. Those just don't work at all if vbe is out of scale or mismatched.

Im beginning to explore replacing a security system, and starting to think about a cell based connection that I receive a feed from rather than a hardwired connection with 3rd party monitoring. I did find another 4 pack of 60W bulbs I'd misplaced, which were for a lamp under a water line that might ...

Thanks, will report back once tested.

Dual single shaft pot I assume, has to be.

The only comp I can think of offhand with a weighting control is the Manley/Langevin ELOP.

This thought directly modifies the existing DIY product that started this forum, which had a single side chain with one set of controls, RMS detector pin 5 joined and VCA pin 15 joined.

Yeah Wayne, you got it. Ends up in mono in a mix. Both sources need compression that track each other to avoid changes in sonic texture, yet bleed in the mic is always a problem. Letting the DI be all of the side chain source is the easiest path, but some weighting control might really be the most i...

Stupid question: How would one vary the amount of interaction between, say, a pair of 4301 detectors in a stereo comp with a single side chain? I envision leaving pins 15 EC+ connected to each other. 0% and 100% are obvious (pin 5 connected, or not), but 50% is not. Resistive isolation? Other? No go...

mediatechnology wrote: ↑

Wed May 22, 2019 9:33 am

emrr wrote: ↑

Wed May 22, 2019 8:17 am

Replaced one of two HVAC systems on the studio building. 2nd one immediately needed service, and it's not long from being replaced too.

Ouch.
What is the current flavor of Freon used in new installs?
Mine is R-22 IIRC.

I needed R-22.